by Jack Gaines
When performing movements in the gym, especially knee related exercises, it is EXTREMELY IMPORTANT that you go through a full range of motion (ROM). If you can’t squat all the way down or lunge to a proper depth, then you need to go to the mobility class, it’s at 6:30PM every Thursday (cheap plug, I know), or talk with a coach about what you can do to help improve your ROM.
I’ve been reading a few studies (here’s one of them) lately that looked at the incidence of non-contact ACL tears (80% of all ACL tears are non-contact, meaning they were not hit by another person when the injury occurred), and there are a few trends out there. The one I’m going to focus on is the overdevelopment of the quadriceps muscle. It’s that nice big muscle on the front of your upper leg. It is the main applier of tension to the ACL and it is worked in the top half of most leg exercises. The hamstring is on the backside of the quadriceps and it reduces the amount of tension in the ACL. It is worked hardest in the bottom half of most leg lifts. So, when your quadriceps are overly strong from doing partial ROM squats (this just means the crease of the hip is above the knee at the lowest portion of the movement) it can make you more likely to have an ACL tear. There are other factors involved, but this is one of the more preventable ones.
Moral of the story: I’m trying to save you money, pain, and months of your active lifestyle. Next time you’re squatting have someone check your depth, if you’re not going low enough, reduce the weight and try to go lower. If you can’t go low enough with your warm up weight, come to my mobility class…you see a trend here? Seriously though, work on going to full depth with body weight squats until you can go full ROM with weight, and then gradually put more weight on the bar. Your wallet, insurance company, and knee will thank you. This goes for all movements, not just squats or lower body work. We want every joints’ muscles, the agonists (reduces tension) and antagonists (increases tension), to be equally developed to the right proportions in order to get stronger and avoid debilitating injuries along the way. In my opinion this is best done with proper form and a full ROM.
Front Squat
5×5
Followed by,
Partner Workout!
2 Rounds
Run 200m
Sit ups
Tire Flips
Double Unders
(one person sprints, the other will perform AMRAP sit ups. Then switch. The same goes with Tire Flips and double unders.)




















